Finding the Fourth Proportional to 2,166,557.21, 2,992,963.28 and 1,730,401.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,557.21 : 2,992,963.28 = 1,730,401.89 : x
2. Step 2: Convert to fraction form
   2,166,557.21/2,992,963.28 = 1,730,401.89/x
3. Step 3: Cross multiply
   2,166,557.21x = 2,992,963.28 × 1,730,401.89
4. Step 4: Simplify right side
   2,166,557.21x = 5,179,029,307,760.59
5. Step 5: Solve for x
   x = 5,179,029,307,760.59/2,166,557.21
6. Step 6: Final answer
   x = 2,390,441.99